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Exploring the Thermal Stability of Sb2Se3 for Potential Applications through Advanced Thermal Analysis Methods.

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Antimony selenide (Sb2Se3) shows good thermal stability up to 500°C. This research provides key data on its decomposition and phase transition, supporting its use in high-temperature energy devices.

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Area of Science:

  • Materials Science
  • Solid State Chemistry
  • Energy Conversion Materials

Background:

  • Antimony selenide (Sb2Se3) is a material with potential for energy applications like photovoltaics and thermoelectrics.
  • Understanding the thermal stability of Sb2Se3 is critical for its application in devices operating at elevated temperatures.

Purpose of the Study:

  • To investigate the thermal stability and decomposition behavior of antimony selenide (Sb2Se3).
  • To determine the high-temperature suitability of Sb2Se3 for energy applications.

Main Methods:

  • Thermogravimetric analysis (TGA) to measure weight loss as a function of temperature.
  • Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) to detect thermal transitions and decomposition.
  • Coats-Redfern method to calculate activation energies for decomposition phases.

Main Results:

  • Sb2Se3 exhibits stability up to 500°C.
  • Two significant weight loss stages were observed, indicating decomposition between 500-610°C and 610-775°C.
  • An endothermic phase transition occurred between 599°C and 630.6°C, with activation energies of 121.8 and 57.2 kJ/mol for decomposition.

Conclusions:

  • Sb2Se3 demonstrates potential for high-temperature energy applications.
  • The study provides crucial data on Sb2Se3's thermal behavior, informing its use in solar cells and thermoelectric devices.